Here is the web archive version of NCA5: web.archive.org/web/20250626...

2/2 Even though the grant has been cancelled, our efforts will remain. We know that making the geosciences more accessible to students is vital for recruiting and preparing an outstanding workforce.

I also like describing the proxy materials with a time capsule analogy. They take a snapshot of water chemistry then are stored in sediments until we "open" them to learn about the past.

I teach a physical geography course to many non-majors and like talking about the marine oxygen isotope records with a figure like this one. I find it helps students understand the directionality and how the proxy links to climate very directly. uwyodioramas.wordpress.com/wp-content/u...

Please reach out if you are interested in using this proxy to reconstruct seasonal hydroclimate in one of your sediment archives!
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Last, we compare the δ18O values of consecutive aquatic moss segments that grew in spring vs. summer and summer vs. fall. We observe higher δ18O values during the fall compared to summer, likely due to evaporation and the 18O enriched precipitation in the late summer/fall.
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We infer weekly to monthly changes in lake water δ18O values from subsampled aquatic moss δ18O values through the summer and compare them with direct summer lake water δ18O measurements at 8 sites. We find similar increasing trends in both, showing the strength of the proxy.
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Given our interests in reconstructing precipitation δ18O values at a seasonal scale back in time, we set out to explore the potential of aquatic moss growth segments in northwest Greenland for reconstructing seasonal hydroclimate.
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Past researchers have described how some aquatic moss species in the Arctic have distinct seasonal growth patterns based on temperature. Generally speaking, summer aquatic moss stems were more dense with leaves and branches than cool season stems.
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Could I be added? I reconstruct climate and environmental change over the past ~15,000 years using lake sediment geochemistry.

In terms of future research, I am working on generating oxygen isotope based records of Holocene and Younger Dryas climate change in the Midwest using lake sediments. Additionally, I am hoping to analyze modern oxygen and hydrogen isotopes in precipitation and surface waters. /4

My past research involved investigating Holocene/Younger Dryas climate using oxygen isotope measurements on materials in lake sediments, testing novel oxygen isotope proxies with potential seasonally specific applications, and using lake sediment geochemistry to reconstruct glacier movement. /3

I'm currently teaching classes on Physical Geography, Environmental Geology, and Environmental Science. I'm planning to develop courses on the Great Lakes and Midwest Climate Change. /2